73 results about "Carboxylic acid anion" patented technology

The invention relates to a preparation method of quaternary ammonium ionic liquid, belongs to the field of chemical synthesis and solves the problems of complicated process and long reaction period in the conventional preparation method of the quaternary ammonium ionic liquid. The method comprises the following steps: reacting quaternary ammonium salt with alkali solution, generating anion exchange reaction to generate quaternary ammonium base and generating acid and alkali neutralization reaction with corresponding phosphonic acid anions or carboxylic acid anions to generate the quaternary ammonium ionic liquid. The method has the advantages of simple preparation process, short time, high product conversion rate and easiness in purification, an alcohol solvent can be recycled through distillation, extraction and other methods. The preparation method of the ionic liquid is wide in applicable scope. Compared with the prior art, the preparation method has briefer preparation steps, and the large-scale production is easy.

The invention belongs to the technical field of nano-materials, and particularly relates to ZnO luminous nanoparticles synthesized in polyethylene glycol and a preparation method thereof. The nanoparticles consist of ZnO monocrystal particles and external polymer radicals, and have high stability and photoluminescence performance. The preparation method comprises the following steps of: dissolving zinc acetate and basic hydroxide in a solvent together with stirring; and reacting at the room temperature for a period of time. The ZnO luminous nanoparticles can be purified by adopting a non-solvent precipitation method. In the stirring reaction process, a reaction mixture is fully contacted with the air, polyethylene glycol is oxidized by the air to form a carboxylic acid anion structure under the alkali catalyzing condition, and carboxylic acid anions can be coordinated onto the surfaces of the ZnO nanoparticles to make the ZnO nanoparticles illuminate stably. The preparation method has the advantages of low cost, environmental friendliness and high yield.

The invention discloses a highly connected coordination polymer and a preparation method thereof. The highly connected coordination polymer adopts the following chemical formula: [Zn5(3,3'-tmbpt)(btec)2(OH)2], wherein betc is deprotonated 1,2,4,5-pyromellitic acid; 3,3'-tmbpt is 1-((1H-1,2,4-triazole)methyl)-3,5-bis(3-pyridyl)-1,2,4-triazole. Carboxyl groups of polycarboxylic acid anions can coordinate with metal ions to form metal clusters with larger size; the metal clusters serve as nodes, so that connections of the nodes can be greatly increased. In addition, distances among several coordinating groups of a polydentate nitrogen-containing ligand 3,3'-tmbpt is relatively large, so that steric hindrance is relatively small during coordination, and the metal clusters can further expand easily to form the coordination polymer adopting highly connected structure. The coordination polymer can serve as a broadband semiconductor material and a molecular-based light emitting material to be further developed and applied.

A two-part foam hair dye which comprises a first part comprising an alkali agent, a second part comprising hydrogen peroxide, and a non-aerosol foamer container, wherein the first part comprises the components (A) to (D), an equivalent ratio of a anion site of the component (A) to a cation site of the component (B) (anion/cation) is more than 1, a mass ratio of a content of the component (C) to the content of the component (D) ((C)/(D)) is 5 or less, and the liquid mixture has a viscosity (25° C.) of 1 to 300 mPa·s:

• • (A) a carboxylic acid anionic surfactant,
  • (B) a polymer or copolymer having a mole fraction of diallyldimethyl quaternary ammonium salt monomer of 70% or more,
  • (C) 0.5 to 1.5% by mass of an oxidation dye having a meta-dihydroxybenzene structure, and
  • (D) 0.1 to 9% by mass of polypropyleneglycol of Mw 200 to 1200.

Disclosed is a cost-effective method for purifying and acidifying carboxylic acids, including organic acids and amino acids. The method involves removing impurities by allowing the anionic form of the carboxylic acid to bind to an anion exchange column and washing the column. The carboxylic anion is displaced as carboxylic acid by washing the resin with a strong inorganic anion. This method is effective in removing organic carboxylic acids and amino acids from a variety of industrial sources, including fermentation broths, hydrolysates, and waste streams.

The invention discloses a preparing method of a titanium salt surface conditioning agent. The preparing method comprises the following steps that firstly, 30 parts of anhydrous disodium hydrogen phosphate is prepared into a water solution with the concentration of 50%; secondly, 1-2 parts of sodium pyrophosphate, 0.8 part of titanyl sulfate, 3.5 parts of sodium pyrophosphate, 2.1 parts of sodium bicarbonate, 1.8 parts of sodium tetraborate, 3.6 parts of sodium hexametaphosphate, 0.3 part of polycarboxylic acid anion organic matter and 0.3 part of N-butyl naphthalene sulfonate are sequentially added in the water solution of disodium hydrogen phosphate, and a mixed solution is obtained; thirdly, the mixed solution is heated to 70 DEG C and fully stirred, and white powder with the water content below 2% is obtained; and fourthly, powder continues to be stirred at the temperature of 75 DEG C, 2.7 parts of sodium pyrophosphate, 1.2 parts of acetic acid, 0.7 part of methyltrimethoxysilane and 3.3 parts of magnesium sulfate are added into the powder at the same time, stirring continues, and drying is carried out till the water content is smaller than 1%. The prepared surface conditioning agent is good in scattering stability and can be stored for a long term.

The present invention relates to the pharmaceutical industry and more particularly to the provision of an agent for inhibiting membrane virus replication. The object of the invention is to provide an agent based on fullerene polycarboxylic anions for suppressing the activity of membrane viruses in treating diseases caused by these viruses. For accomplishing said subject, there is proposed a group of inventions united by a common inventive concept, said group comprising a method for preparing compounds, studying the mechanisms of action, provision of pharmaceutical compositions, and developing methods of treating with their use. Said object t is accomplished by selecting such quantitative ratios of the components and reaction conditions, which ensure the preparation of polyaddition products. It has been established that in carrying out the synthesis the amount of the amino acid must exceed the amount of fullerene by more than 50 times. The product prepared by the proposed method has an unlimited solubility in water, required bioavailability, high efficiency of action on non-infected cells, low toxicity. The content of the main substance in the target product is at least 90%. The process is adaptable to streamline production and can be used in the pharmaceutical industry. Compositions of drugs for and methods of treating infectious diseases caused by human immunodeficiency virus (HIW), herpes simplex virus (HSC) and hepatitis C virus (HCV) have been developed.

The invention discloses a perovskite quantum dot-polymer complex, a preparation method of a wavelength conversion film and a light-emitting device. The preparation method of the perovskite quantum dot-polymer complex comprises the following steps: a step of providing precursors, including: a first precursor composed of at least one of Rb <+>, Cs <+>, NR4 <+> or [CH (NH2) 2] <+> and at least one ofcarboxylate anions or halogen anions, wherein in the NR4 <+>, R is independently a hydrogen atom or a substituted or unsubstituted C1-C10 linear or branched alkyl group; a second precursor includinga Pb halide, a Ge halide, a Si halide, a Sn halide, or a combination thereof; and a polymer; and a step of mixing the precursors at a first temperature at or above the melting point of the polymer, and then cooling the mixed precursors. According to the invention, the problem of poor stability of existing perovskite quantum dots can be effectively solved.

The invention discloses a preparing method for a manganese series phosphatisation surface conditioning agent. The preparing method includes the following steps that firstly, 35 parts of anhydrous sodium hydrogen phosphate is prepared into a water solution with the concentration being 55%; secondly, 1-2 parts of N-methyl pyrrolidone, 0.4 part of titanyl sulfate, 4.3 parts of sodium pyrophosphate, 3.8 parts of sodium bicarbonate, 0.7 part of sodium tetraborate, 2.1 parts of sodium tripolyphosphate, 0.3 part of polycarboxylic acid anion organic matter and 0.9 part of lauroyl aminoethyl sodium sulfate are sequentially added into the water solution of the sodium hydrogen phosphate, and a mixed solution is obtained; thirdly, the mixed solution is heated to 75 DEG C and sufficiently stirred, and white powder with the water content below 2% is obtained; fourthly, the powder is stirred continuously at the temperature being 80 DEG C, 0.9 part of sodium pyrophosphate, 1.2 parts of glacial acetic acid, 0.4 part of methyl triethoxysilane and 1.7 parts of magnesium sulfate are added into the powder at the same time, and stirring and drying are conducted continuously till the water content is smaller than 1%. The surface conditioning agent prepared through the preparing method is good in dispersion stability and capable of being stored for a long time.

The invention discloses application of a carboxylate compound as an absorbent for capturing carbon dioxide. The carboxylate compound provided by the invention is used as an absorbent for capturing carbon dioxide and/or is applied to preparation of the absorbent for capturing carbon dioxide; carboxylic acid anions in the carboxylate compound are carboxylate radicals with carbon chains with more than 3 carbon atoms, and cations are substituted quaternary ammonium ions and/or quaternary phosphonium ions. The method for efficiently trapping carbon dioxide in an energy-saving manner by adopting a carboxylate compound stable to water comprises the following steps: placing an aqueous solution of the carboxylate compound in a carbon dioxide atmosphere to absorb carbon dioxide, so as to obtain a conjugate of carboxylate and carbon dioxide separated out from water. The invention is used for solving the problems of corrosivity, volatility and high energy consumption of the existing system, and can obtain higher carbon dioxide capture capacity at high temperature, low pressure of carbon dioxide pressure and high pressure; the conjugate of carboxylate and carbon dioxide is stable to water; the carboxylate can be regenerated.

The invention discloses a method for catching sulfur dioxide by adopting a halogenated carboxylic acid ion liquid. According to the halogenated carboxylic acid ion liquid, halogen is introduced onto carboxylic acid negative ions of a functionalized ionic liquid, the absorbing capacity of sulfur dioxide is improved by utilization of the action of halogen reinforced onto the negative ions and sulfur dioxide, and the electron absorption property of the halogen on the negative ions is utilized to improve the desorption property of carboxylic acid ion liquid, so that efficient reversible absorption of the sulfur dioxide can be realized.

The present invention relates to a method for preparing an ionic liquid having a carboxylic acid anion using a microreactor. More specifically, the present invention relates to a method for preparing, with high efficiency, an ionic liquid having a carboxylic acid anion as shown in FIG. 1, by having sodium butanoate, sodium 2-ethylhexanoate, or sodium octanoate undergo a substitution reaction with 1-alkyl-3-methylimidazolium, 1,1-alkylmethylpyrrolidinium, 1,2-dimethyl-3-alkylimidazolium, 1-alkyl-3-methylpyridinium, or tetramethylammonium, each of which being a cation. The ionic liquid prepared according to the present invention has high purity, containing residual halide at less than 10 ppm, and has high electrical conductivity, and therefore is capable of being used as an electrolyte or for a condenser.

The invention provides an electrolytic capacitor. The electrolytic capacitor comprises an electrolyte and a core package soaked in the electrolyte, the sparking voltage of the electrolyte is greater than 400V, the electrolyte comprises a main solvent and a main solute, the main solvent comprises a lactone compound, and the main solute comprises imidazolinium cations and organic carboxylic acid anions; the total carbon content of the organic carboxylic acid anions is 8-26, and the structural formula of the organic carboxylic acid anions is shown in the description, wherein P is a main carbon chain of 1-25 carbons, and the main carbon chain contains or does not contain unsaturated bonds; R1, R2, R3 and R4 are respectively and independently selected from hydrogen, benzene rings, alkyl benzenerings, nitrobenzene rings, carboxyl or straight carbon chains with 1-10 carbons or carbon chains with branched chains, and one or two of R1, R2, R3 and R4 are selected from carboxyl; the core packagecomprises an anode, a cathode and electrolytic paper, the tightness of the electrolytic paper is 0.30-0.75 g/cm <3>, and the thickness of the electrolytic paper is 40-120 microns; and the working voltage of the electrolytic capacitor is 350 to 500 V. The electrolytic capacitor provided by the invention widens the working temperature range and has the characteristic of high voltage resistance.